Secure Communications Made Simple

Encrypt phone calls, messaging, and conference calls on Android, iPhone and BlackBerry with easy to use applications.


Secure phone calls and messaging on Android, iPhone and BlackBerry


Secure Conference Calls and Mobile to Desktop Communication


Secure Messaging on Android, iPhone and BlackBerry


Centralized Management for TrustCall Secure Mobile Communications

Why You Should Protect Your Mobile Communications

Koolspan’s Communication Security Features

Multi-platform Support

Supports iPhone, Android, and Blackberry

Intuitive GUI

Contact Lists, Keypads, Favorites, and Call/Text Logs

Optimized for Mobile

Low Bandwidth Consumption, VoIP Gateway, Push Notifications, Interoperable Apps

Samsung S6 with KoolSpan TrustCall encryption application

Ease of Deployment

Installed by MDM or by User via Apple Store or Google Play Store

Robust Encryption

Phone call and messaging security via software, TEE and MicroSD encryption

Flexible Hosting

TrustCenter and TrustRelay Server can be hosted and managed by KoolSpan or deployed on-premise

“The risks are quite high as attacks in which cellphone calls are listened to and text messages are intercepted come from many sources including competitive business espionage, organized crime and nation states around the world.”

Jeremy Kroll

CEO of K2 Intelligence

Stay ahead of pervasive threats to voice, text, and data.

We’re ready to listen and help you and your organization succeed.

Give us a call at 240-880-4400 or email

Contact Us

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